Is there a difference in the quality of NDVI images from the free account and paid accounts?
There should be no difference in the quality of NDVI images between free and paid accounts. More is explained here in the FAQ:
Out of interest, what is the quality issue? Is it the spatial resolution of your NDVI?
I believe that the image quality is poor due to the range of NDVI index values that I am using in addition to the small polygon formed by the property points.
Thank you for the clarification about the paid accounts.